wrapper(L,Args):-
   catch(one_more_wrap(L,Args),_,send(L,false)).

one_more_wrap(L,Args):-
   real_predicate(Args,Result),
    send(L,[true,result]).


% of course you can avoid the second wrap if you add the send to the real predicate:
% real predicate = foo

foo(L,X,Result):-
   X>0,
   Result=42,
   send(L, [true,42]).